A77d - 11.a4 - Classical, Main Line (1954)

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A77d — Classical, Main Line (1954)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Nbd7 11.a4
Les coups candidats
Ambassadeurs : Lukacs, Peter (12x), Gruenfeld, Yehuda (11x), Bakheet Farag (11x), Berczes, David (7x), Gligoric, Sofija (6x), De Boer, Gert-Jan (6x), Browne, Walter Shawn (5x), Kovacevic, Slobodan (5x)
Ambassadeurs : Velimirovic, Dragoljub (7x), Bakheet Farag (5x), Degterev, Pavel (4x), Bagirov, Vladimir (3x), Bagonyai, Attila (3x), Balutescu, Mihail Goanga (3x), Yanayt, Eugene (3x), Boensch, Uwe (2x)
11…g5 — 4.5% (56 parties)
Ambassadeurs : Suba, Mihai (11x), Stoica, Valentin (5x), Foisor, Ovidiu-Doru (4x), Kindermann, Stefan (3x), Schmidt, Wlodzimierz (2x), Zeitlein, Michael (2x), Sygulski, Artur (2x), Flear, Glenn C (2x)
11…b6 — 1.5% (19 parties)
Ambassadeurs : Quinteros, Miguel A. (2x), Bakheet Farag (2x), Ruiz Gutierrez, Manuel (1x), Alfaro, Ruiz Santiago (1x), Amos, Bruce M. (1x), Pratt, David (1x), Leimeister, Winfried (1x), Hinz, Horst (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 11…Ne5 11…a6 11…g5 11…b6
<1800 45 60% 20% 7% 9%
1800-2200 334 56% 39% 2% 1%
2200-2600 652 62% 30% 6% 1%
2600+ 23 74% 26% — —
Évolution par décennie (% des parties)
Décennie N parties 11…Ne5 11…a6 11…g5 11…b6
1950s 2 — 50% — —
1960s 1 — 100% — —
1970s 106 54% 35% 5% 3%
1980s 290 66% 20% 13% —
1990s 142 61% 32% 4% 1%
2000s 272 67% 28% 1% 2%
2010s 333 58% 38% 0% 2%
2020s 110 45% 46% 2% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
11…Ne5 58% 45% ▼ -12.8%
11…a6 38% 46% ▲ +8.5%
11…g5 0% 2% ▲ +1.5%
11…b6 2% 2% -0.3%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 1 partie
Tal, Mikhail — 1 partie
Parties historiques
11…Ne5 — 60.5% (760 parties)
1970 — Gligoric, Sofija vs Fischer, Kevin R — 0-1 — Palma de Mallorca izt
1971 — Gligoric, Sofija vs Tatai, Stefano — 1/2-1/2 — Venice ITA
1971 — Miguel, Nahuel vs Ree, Hans — 0-1 — Wijk aan Zee NED
1972 — Manetti, Kira Konsuelo vs Evans, Larry — 0-1 — Sparks USA
1972 — Gligoric, Sofija vs Kavalek, Lubomir — 1-0 — Skopje MKD
11…a6 — 31.3% (393 parties)
1955 — Schweber, Samuel vs Johannessen, Svein — 0-1 — Antwerp BEL
1969 — Cvetkovic, Srdjan vs Suetin, Alexey S — 0-1 — Skopje MKD
1970 — Gligoric, Sofija vs ? — 1/2-1/2 — Rovinj/Zagreb CRO
1970 — O'Kelly de Galway, Alberic vs Hartoch, Robert G — 1/2-1/2 — Bad Pyrmont GER
1970 — Gligoric, Sofija vs ? — 1/2-1/2 — Rovinj/Zagreb CRO
11…g5 — 4.5% (56 parties)
1977 — Bonchev, Stojko vs Zeitlein, Michael — 0-1 — Smoljan/Pamporovo
1977 — Bonchev, K vs Zeitlein, Michael — 0-1 — URS
1978 — Tatai, Stefano vs Povah, Nigel E — 1/2-1/2 — Londen open
1978 — Petrosian, Tigran V. vs Lukin, Andrei M — 1-0 — URS
1979 — Magerramov, Elmar vs Kasparov, Garry — 1-0 — Sovjet-Unie
11…b6 — 1.5% (19 parties)
1972 — Amos, Bruce M. vs Pratt, David — 1-0 — Toronto CAN
1973 — Quinteros, Miguel A. vs Ruiz Gutierrez, Manuel — 1-0 — Malaga ESP
1973 — Quinteros, Miguel A. vs Alfaro, Ruiz Santiago — 1-0 — Torremolinos ESP
1996 — Bakheet Farag vs Leimeister, Winfried — 1-0 — Oberwart AUT
1998 — Hinz, Horst vs Spandlowski, Detlef — 1/2-1/2 — ?